Cools down a 12x 10 bedroom pretty quickly and it stays cool unit is a little loud but no worse than a fan on Medium in my opinion. Only gripe is the drain plug, you have GOT to make sure that thing is tight or your floor is gonna be wet real quick. Not that we have had to drain it more than 2 times all summer. But I can see where it will be a problem for some people. We have ours sitting in a drain pan. A little pricey but if you can catch a sale I say snap it up.